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Old 29-10-2006, 11:34   #2
delmarrey
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Join Date: Mar 2003
Location: Puget Sound, WA
Boat: Choate 40
Posts: 3,921
I'm not promoting this product BUT

this artical will give you an idea of what you have (Residual tar)............._/)

http://www.algae-x.net/faq_answers.htm

BTW-Adding Biodiesel is not recommended on older engines. It can eat the seals.....The newer engines have the proper seal material for bio....
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